Love rat Marcel Sommerville has admitted cheating on Gabby Allen - blaming arguments for bedding a stranger while they were on a romantic beach break

Former Blazin' Squad member Marcel, who prided himself on giving love advice to his fellow islanders during last year's hit show, said he regretted his cheating and hoped fitness bunny Gabby would forgive him.

Cheating slurs against "Dr" Marcel included him bedding a stranger - even begging the woman for "day sex" while his lover was at the gym.

Marcel's rep confirmed his love rat status, telling Mail Online: "Sadly the rumours are true, Gabby and Marcel have split up. Marcel can't really defend his actions as he knows he did wrong and will regret it forever.

The couple were believed to be one of the longer lasting Love Island couples (Image: REX/Shutterstock)

They attended an event together in London just last Thursday (Image: Getty Images Europe)

Marcel on the Mexico break where he bedded a stranger (Image: Instagram)

"Marcel is upset that he broke the heart of someone he loves and someone that he shared so many special moments with, but with all the good times there are difficult times, and sadly Marcel and Gabby had been in a bad place at this stage.

"Gabby was a special part of my Marcel's life, and he hopes one day she can find it in herself to forgive him."

The couple were on holiday together in Mexico when Marcel is said to have slept with another woman.

Gabby is in pieces after Marcel's other woman showed her flirty messages from the Blazin' Squad hunk.

He even suggested they meet for "day sex" as fitness fanatic Gabby worked out in the hotel gym.

Gabby and Marcel met on Love Island last year and have been together for nine months.

Gabby in Mexico - little did she know her boyfriend was romping with strangers (Image: Instagram)

Wile Gabby was posing up a storm in Mexico Marcel was bedding strangers (Image: Instagram)

But she had no idea her boyfriend was arranging "secret meetups" with another guest at the resort.

“They had a row one night so Gabby went back to their hotel room to sleep," a source told The Sun .

“Marcel started chatting to another woman at the bar where they kissed in full view of other guests.

"He insisted that he was staying there for promotional purposes and that it was over between him and Gabby.

“He claimed his relationship with Gabby was over and he just needed to make it through the week.

"Marcel and the girl slept together in her room and he left and went back to Gabby's room, but promised to see her the following day when Gabby was at the gym."